This is also a great money-saving tip if you're preparing a meal that uses loads of boiled eggs and boiled potatoes and also are in an area where water costs a lot but not so much that you'll stop boiling eggs and potatoes in it altogether but would see saving a panful of it as a benefit which, personally, I find highly relatable as I am currently trapped in a desert that has eggs and potatoes instead of sand and also please send help.